1 August 1980 Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers
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Abstract
There are many thousands of luminance photometers in the field, both telephotometers and microphotometers; however, very few of these have scanning microphotometric capability. This paper describes a unique optical system that can be field-interchanged with the standard objective lens, without requiring any modification of the photometer's internal optical system, to convert an existing photometer into a high-resolution scanning microphotometer. One embodiment, called the MicroScanner Spatial Scanner, will be described in detail. Used with any standard Pritchard Photometer, this scanner provides variable-speed scanning of a half-inch (12 mm) of object space with field coverage as fine as 0.0001 in. (0.0025 mm) or as broad as 0.39 in. (10 mm). The system features photometric uniformity within ±0.5% over the entire scan distance, freedom from polarization error, and a half-inch scan distance independent of choice of objective lens.
Thomas H. Bulpitt, Thomas H. Bulpitt, Richard A. Walker, Richard A. Walker, } "Unique Optical System For Conversion Of Existing Photometers Into Scanning Microphotometers," Optical Engineering 19(4), 194561 (1 August 1980). https://doi.org/10.1117/12.7972559 . Submission:
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